CVE-2024-20451: spa 301 firmware Buffer Overflow — Fix

Description

Multiple vulnerabilities in the web-based management interface of Cisco Small Business SPA300 Series IP Phones and Cisco Small Business SPA500 Series IP Phones could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly. These vulnerabilities exist because HTTP packets are not properly checked for errors. An attacker could exploit this vulnerability by sending a crafted HTTP packet to the remote interface of an affected device. A successful exploit could allow the attacker to cause a DoS condition on the device.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-120 CWE-120

Affected Products

Vendor	Product	Versions
cisco	spa_301_firmware	All
cisco	spa_301_1_line_ip_phone	All
cisco	spa_303_firmware	All
cisco	spa_303_3_line_ip_phone	All
cisco	spa_501g_firmware	All
cisco	spa_501g_8-line_ip_phone	All
cisco	spa_502g_firmware	All
cisco	spa_502g_1-line_ip_phone	All
cisco	spa_504g_firmware	All
cisco	spa_504g_4-line_ip_phone	All
cisco	spa_508g_firmware	All
cisco	spa_508g_8-line_ip_phone	All
cisco	spa_509g_firmware	All
cisco	spa_509g_12-line_ip_phone	All
cisco	spa_512g_firmware	All
cisco	spa_512g_1-line_ip_phone	All
cisco	spa_514g_firmware	All
cisco	spa_514g_4-line_ip_phone	All
cisco	spa_525g_firmware	All
cisco	spa_525g_5-line_ip_phone	All
cisco	spa_525g2_firmware	All
cisco	spa_525g2_5-line_ip_phone	All

References

Advisories & Patches

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-spa-http-vulns-RJZmX2Xz

Frequently Asked Questions

What is CVE-2024-20451? +

Multiple vulnerabilities in the web-based management interface of Cisco Small Business SPA300 Series IP Phones and Cisco Small Business SPA500 Series IP Phones could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly. These vulnerabilities exist because HTTP packets are not properly checked for errors. An attacker could exploit this vulnerability by sending a crafted HTTP packet to the remote interface of an affected device. A successful exploit could allow the attacker to cause a DoS condition on the device. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-20451? +

CVE-2024-20451 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-20451? +

CVE-2024-20451 affects products from cisco, specifically: spa_301_1_line_ip_phone, spa_301_firmware, spa_303_3_line_ip_phone, spa_303_firmware, spa_501g_8-line_ip_phone, spa_501g_firmware, spa_502g_1-line_ip_phone, spa_502g_firmware, spa_504g_4-line_ip_phone, spa_504g_firmware, spa_508g_8-line_ip_phone, spa_508g_firmware, spa_509g_12-line_ip_phone, spa_509g_firmware, spa_512g_1-line_ip_phone, spa_512g_firmware, spa_514g_4-line_ip_phone, spa_514g_firmware, spa_525g2_5-line_ip_phone, spa_525g2_firmware, spa_525g_5-line_ip_phone, spa_525g_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-20451? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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